Transformer arc-shaped oil temperature meter reading method and device based on machine vision

Abstract

The invention relates to a transformer arc-shaped oil temperature meter reading method based on machine vision. The method comprises the following steps of S1, obtaining a dial image of a transformer arc-shaped oil temperature meter, and recording scales and pointers in the dial image, S2, determining the position of each pointer through color recognition, and determining a scale graph image according to the positions of the pointers, S3, determining the position of each scale through gray recognition, S4, according to the position of each pointer and the position of each scale, acquiring the scale closest to each pointer through a distance method, and S5, obtaining the temperature indicated by each pointer through the closest scale. According to the method, pointers and scales on a dial plate can be recognized through color recognition, the pointers correspond to the scales in position through a distance method, the relation between the scales in the arc-shaped oil temperature meter and the positions of the pointers are accurately read, and therefore the scale value of each pointer is accurately calculated and converted into corresponding temperature data.

Description

technical field [0001] The present invention relates to the technical field of machine vision, in particular to a method, device, equipment and storage medium for reading an oil temperature gauge based on machine vision. Background technique [0002] With the development of society, many computer technologies have been applied to the numerical reading of instrument devices, such as the latest machine vision technology. Machine vision is a computer technology that uses a computer to process the captured pictures and obtain corresponding information. [0003] Many enterprises and factories have a small substation to reduce the high voltage in the power grid to the voltage required by the enterprise. The small substation requires staff to regularly read the instrument values ​​of various electrical equipment to ensure the safety and security of electricity consumption. The power supply is stable. In a substation, the transformer is the most common electrical equipment, and th...

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Problems solved by technology

[0005] In the application process of the arc-shaped oil temperature gauge of the transformer, the environment where the arc-shaped oil temperature gauge is located is relatively noisy. It is difficult to accurately locate and extract the dial and scale of the arc-shaped oil temperature gauge. It is necessary to read four corresponding values ​​at the same time. The existing The position matching method of the pointer and the scale value in the technology cannot be applied to the arc oil temperature gauge

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